Improvement in steam-heating apparatus



P. E. CHASE.

Heating Apparatus.

No. 13,842. Patented Nov. 27, 1855.

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UNITED STATES PATENT FFICE.

IMPROVEMENT IN STEAM-HEATING APPARATUS.

Specification forming part of Letters Patent No. 13,842, dated November27, 1855.

T0 all whom it may concern:

Be it known that I, PLINY E. CHASE, of j the cityand county ofPhiladelphia, and State of Pennsylvania, have invented certain new 1 anduseful Improvements in Varming Build- 1 ings; and I hereby declare thatthe following i is a full, clear, and exact description thereof,

reference being had to the accompanying drawings, making part of thisspecification,

in which- Figures 1 and 2 represent vertical sections through the axisof the apparatus, which is composed of the following parts:

First, the fire-chamber B is a close space similar to that of anair-tight stove, of any convenient shape, having a grate suitable forthe' peculiar fuel to be used, an ash-pit, a chimney or flue-pipe forthe purpose of carrying off the products of combustion, and an airsupplypipe, G, abutting in the ash-pit chamber below the grate; second, theboiler A is set above the fire-chamber, the chimney-flue of whichpenetrates into the interior of the boiler, conveying through it theheated gases and smoke, diffusing most of its available heat. At the topor at any part of the boiler above the intended level of the water isattached, third, the steain-pipe C, in connection with the globe D, andthe expansion steambell E, the latter plunged into, fourth, theregulating-tank 0. To complete the description of the parts, I have tomention, fifth, the water-feed pipe (1, leading from the collectingtankC to the boiler A, and, sixth,the radiator R. The whole apparatus isinclosed in a suitable chamber for heating the air which is conveyedinto the apartments to be warmed.

To convey a clear and distinct conception of the apparatus, I add thefollowing description of its modus opertmdi:

The apparatus being set in working orderthat is, the water in the boilerbeing raised to a temperature making steam by the effect of the heatfrom the firechamberthe steam in the boiler will expand, graduallyincreasing its pressure upon the water in the steam-bell E and causingthe water of the regulatingtank 0, surrounding the bell, to rise to alevel the height of which is proportional to the pressure inside thebell. iVhen the tension of the steam is such as to raise the level ofthe water to the dotted line 2 t, the supply of air 2 to thefire-chamber is intercepted and the fire is consequently slackened.Should the pressure of the steam be still increasing, the water of theregulating-tank O is forced to run over the partition I into the pipe d,and there it is mixed with the water contained in the boiler, reducingthe temperature of the latter. There is another supply of water to theboiler arising from the condensation of steam in the pipe 0 and theglobe D. This peculiar mode of circulation of water and condensed steamobviplenishing the boilers. becomes too powerful, notwithstanding thecheck of draft by the elevation of the waterlevel in the regulating-tankand the lowering of temperature, the water in the bell will be pressedbelow the level of its edges. The steam will escape from E into the flueG, which .Will check the combustion of the fuel. By the sudden coolingof the fire-chamber avacuum is produced by the condensation of steam inthe boiler, which would draw the water back from the regulating-tankthrough the steampipes and cause disturbance and irregularity in theoperation of the apparatus. This is prevented by the globe D, which hasa capacity as large as that of the tank itself.

By the above-described apparatus the warming process is conducted in thebest conditions as to economy of fuel,perfect ventilation, and constantsupply of warm fresh air charged. with a certain quantity of moisture,highly beneficial to health.

The air is admitted at an opening managed at the lowest section of theheating-chamber and surrounding the apparatus. It is heated in itsgradual ascension, first, by contact with the fire-chamber; secondly, byhot water from the boiler; then by steam from the different steam-pipesand radiators, it being thus heated in three different modes, exhaustingall available heat diffused by conduction, convection, and radiation,the chamber being, moreover, filled with steamy atmosphere from theincessant evaporation of water from the tanks, which will effectuallycharge with moisture the air which is conveyed to the rooms.

The apparatus is self-regulating, as the draft to the fire-chamber iscontrolled by the pressure of steam upon a column of water,

ates greatly the necessity of frequently re- If the head of steam and inconsequence of the same arrangement it is self-controlling, dispensingwith safetyvalves and removing all danger from explosion. Thetemperature of the air itself is also regulated by the operation of theapparatus.

Having thus fully described my improveinent, what I claim as myinvention, and desire to secure by Letters Patent, is-

he peculiar arrangement of the pipes 15 and (Z the draft-pipe G, and thetanks 0 and C, in combination with the steam-chamber E, in the mannerdescribed, and for the purposes speci- 'fied.

PTJNY E. CHASE.

\Vitnesses:

SAML. P. VAN DYKE, ALEXIS S. LEWIS.

